CN100514172C

CN100514172C - Camera capable of displaying live view

Info

Publication number: CN100514172C
Application number: CNB2007101077458A
Authority: CN
Inventors: 寺田洋志
Original assignee: Olympus Imaging Corp
Current assignee: Olympus Corp
Priority date: 2006-04-28
Filing date: 2007-04-28
Publication date: 2009-07-15
Anticipated expiration: 2027-04-28
Also published as: US20070253692A1; JP2007298742A; US7899319B2; CN101063791A

Abstract

A camera capable of displaying a live view is disclosed, which has a movable reflecting mirror movable between a viewing position for reflecting a light beam from a photographing lens to guide the light beam to a finder optical system, and a position retracted from an area through which the light beam from the photographing lens passes, and which is configured such that, upon focusing the photographing lens from the state of the live view display, the movable reflecting mirror is driven without charging a shutter.

Description

Camera capable of displaying live view

The application is based on No. the 2006-126504, the Japanese patent application of submitting on April 28th, 2006 formerly and advocate right of priority.

Technical field

The present invention relates to have the camera of displaying live view Presentation Function.To be the image that will be repeated to obtain by imaging apparatus be presented at function on the display device as dynamic image to the displaying live view Presentation Function, is also referred to as and browses image display function, electronic viewfinder function.

Background technology

In existing camera, use the optical profile type view finder to carry out the observation of shot object image, but nearest digital camera more and more have the so-called displaying live view Presentation Function that will be presented at continuously by the obtained image of imaging apparatus on the display device of LCD monitor etc.The digital camera that these have the displaying live view Presentation Function, what have has an optical profile type view finder, and what also have does not have an optical profile type view finder.

This displaying live view Presentation Function is effective owing to do not produce parallax when close-up photography etc. for example.Therefore also proposed the displaying live view Presentation Function is installed in various examples on the digital single-lens reflex camera.

For example, a kind of digital single-lens reflex camera capable of displaying live view (2002-No. 369042 communiques of TOHKEMY) of selecting optical finder display mode and electronic viewfinder display mode has been proposed.In this numeral single-lens reflex camera, when having selected the electronic viewfinder display mode, make moving reflector keep out of the way and make focal-plane shutter be in full-gear to come shot object image is imported imaging apparatus, thus obtained shot object image is presented on the LCD monitor continuously from light path of photography.

In addition, when this displaying live view Presentation Function moves, moving reflector is kept out of the way outside the light path of photography.On the other hand, in order to carry out the general auto-focus adjusting of adopting (AF) in existing single-lens reflex camera, moving reflector is moved in the light path of photography based on the TTL phase difference method.Therefore, in existing single-lens reflex camera, carry out under the situation of TTL phase differential AF, temporarily stop displaying live view and show.

On the other hand, in existing single-lens reflex camera, the action of keeping out of the way that shutter is tightened (charge) action and moving reflector is carried out together as set.Therefore, in order to carry out TTL phase differential AF, be necessary to make shutter to tighten and carry out together with the driving of moving reflector.Therefore, existence is loaded big owing to two mechanisms of driving make and is made time lag and the bigger problem of energy loss.

Summary of the invention

The present invention In view of the foregoing makes, and the purpose of this invention is to provide a kind of carrying out and do not drive with bigger load under the situation that auto-focus regulates when carrying out displaying live view, can reduce the camera capable of displaying live view of time lag and energy loss.

The camera of demonstration capable of displaying live view of the present invention is constructed as follows: have moving reflector, this moving reflector is movable to upper/lower positions, that is: make from the beam reflection of phtographic lens and import the observation place of viewing optical system and from the retreating position that keep out of the way in the zone that passes through from the light beam of above-mentioned phtographic lens; When the displaying live view show state carries out the focusing of phtographic lens, do not carry out shutter and tighten and drive moving reflector.

Enumerate structure one example of the camera of above-mentioned demonstration capable of displaying live view, this camera has: moving reflector, its rotation by motor are movable to that the beam reflection that makes from phtographic lens imports the observation place of viewing optical system and from the retreating position that keep out of the way in the zone that passes through from the light beam of above-mentioned phtographic lens; Imaging apparatus, it is configured in the rear of above-mentioned moving reflector, receives when above-mentioned moving reflector is in above-mentioned retreating position and makes a video recording from the subject light beam of above-mentioned phtographic lens; Image displaying part, it is used to show the subject image by above-mentioned imaging apparatus shooting; Sensor is used in focusing, and it is used to make the above-mentioned phtographic lens subject of focusing; Catoptron use in focusing, itself and above-mentioned moving reflector interlock, and handle imports above-mentioned focusing sensor from the light beam of above-mentioned phtographic lens when above-mentioned moving reflector is in above-mentioned observation place; The auto-focus governor motion, its output according to above-mentioned focusing sensor is driven into focusing position to above-mentioned phtographic lens; Shutter, it is configured between above-mentioned moving reflector and the above-mentioned imaging apparatus; And driving mechanism, it is when carrying out the focusing of above-mentioned phtographic lens in the dynamic image demonstration of carrying out by above-mentioned imaging apparatus shooting on above-mentioned image displaying part, make above-mentioned auto-focus governor motion action, and after above-mentioned moving reflector is driven into above-mentioned retreating position, do not carry out tightening of above-mentioned shutter, and above-mentioned moving reflector is driven into above-mentioned observation place.

Camera capable of displaying live view of the present invention does not drive the bigger load that shutter tightens the both sides that drive with moving reflector under the situation of carrying out the auto-focus adjusting under the displaying live view show state.Therefore, can provide a kind of camera capable of displaying live view that has reduced time lag and energy loss.

Description of drawings

With reference to following explanation, claims and accompanying drawing, will understand the above-mentioned of apparatus and method of the present invention and other features, aspect and advantage better, in the accompanying drawings:

Figure 1A and Figure 1B are the block diagrams of schematic configuration of internal mechanism that the digital single-lens reflex camera of the 1st embodiment of the present invention is shown, Figure 1A is the block diagram that illustrates along the inner structure of the optical axis direction of phtographic lens, and Figure 1B is the block diagram that the inner structure of seeing from the frontal of camera body 200 only is shown;

Fig. 2 A-2E illustrates the shutter of digital single-lens reflex camera of the 1st embodiment of the present invention and the figure of moving reflector, Fig. 2 A is the stereographic map of shutter, Fig. 2 B is the front view (FV) of shutter, Fig. 2 C is the stereographic map of moving reflector, Fig. 2 D is the figure that the catoptron decline state of moving reflector is shown, and Fig. 2 E is the figure that the catoptron propradation of moving reflector is shown;

Fig. 3 is the partial detailed figure of the shutter/mirror drive unit of the digital single-lens reflex camera of the 1st embodiment of the present invention;

Fig. 4 A-4B is the figure of cam region that the digital single-lens reflex camera of the 1st embodiment of the present invention is shown, and Fig. 4 A illustrates the figure that catoptron tightens the cam region of cam, and Fig. 4 B illustrates the figure that shutter tightens the cam region of cam;

Fig. 5 is the stretch-out view of cam region of the digital single-lens reflex camera of the 1st embodiment of the present invention;

Fig. 6 is the integrally-built block diagram of main electrical system that the digital single-lens reflex camera of the 1st embodiment of the present invention is shown;

Fig. 7 is the process flow diagram that the displaying live view of the digital single-lens reflex camera in the 1st embodiment of the present invention shows;

Fig. 8 is the process flow diagram of the displaying live view initial setting of the digital single-lens reflex camera in the 1st embodiment of the present invention;

Fig. 9 is the process flow diagram that the auto-focus of the digital single-lens reflex camera in the 1st embodiment of the present invention is regulated action;

Figure 10 is the process flow diagram of the photography action of the digital single-lens reflex camera in the 1st embodiment of the present invention;

Figure 11 is the sequential chart during the displaying live view of the digital single-lens reflex camera in the 1st embodiment of the present invention shows; And

Figure 12 is the process flow diagram that the displaying live view of the digital single-lens reflex camera in the 2nd embodiment of the present invention shows.

Embodiment

Below, with reference to accompanying drawing preferred implementation of the present invention is described.

Below, use has been used digital single-lens reflex camera of the present invention and has been come a preferred implementation is described.Figure 1A and Figure 1B are the block diagrams of schematic configuration of internal mechanism that the digital single-lens reflex camera of an embodiment is shown, Figure 1A is the block diagram that illustrates along the inner structure of the optical axis direction of phtographic lens, and Figure 1B is the block diagram that the inner structure of seeing from the frontal of camera body 200 only is shown.

On camera body 200, dispose release-push 21.This release-push 21 has the 1st release-push of connecting (hereinafter referred to as 1R) and the 2nd release-push of connecting (hereinafter referred to as 2R) when pressing entirely when the cameraman partly presses.By the connection of the 1st release-push, camera carries out the photography warming-up exercise of the focusing of focus detection, phtographic lens, the photometry of subject brightness etc.By the connection of the 2nd release-push, (ChargeCoupled Device: charge-coupled device (CCD)) the photography action of the view data that is taken into shot object image is carried out in the output of 221 (with reference to Fig. 6) to camera according to the CCD as photographic element.

On the optical axis of the phtographic lens 101 (with reference to Fig. 6) of the inside that is disposed at lens barrel 100, in the reflector box of camera body 200, dispose moving reflector 201.This moving reflector 201 can be turned to upper/lower positions, that is: in order to make the subject light beam (for example reflex to finder optical system, pentaprism 207 etc.) go up and with respect to the position of inclined light shaft 45 degree of phtographic lens 101, and for shot object image is imported imaging apparatus (CCD described later (Charge Coupled Device) 221) from the position that light path of photography is kept out of the way.The rotation axis of moving reflector 201 extends along the direction vertical with the drawing of Figure 1A.Use this moving reflector 201 that the subject light beam is reflexed to the top.In addition, in the present embodiment, the subject light beam being reflexed to the top, yet be not limited thereto, also can be the right-hand or left of camera body, comes the most suitably to select the reflection direction of subject light beam according to the configuration of mechanism member and optical component.

On the reflection optical axis of moving reflector 201, dispose focusing glass 205.Focusing glass 205 is to be used to the base plate face that makes 101 pairs of subject light beams of phtographic lens carry out imaging, and focusing glass 205 is provided on the position of the distance of moving reflector 201 and CCD 221 equivalences.Above focusing glass 205, dispose and be used to make the pentaprism 207 that reverses about shot object image.View finder eyepiece portion 33 is eyepiece portions of finder optical system, and the cameraman has a look this eyepiece portion 33 just can carry out the affirmation of shot object image.

Constitute by half-reflecting mirror near the central authorities of above-mentioned moving reflector 201.Be provided with the range finding that is used to make the subject light beam reflection that has seen through half-reflecting mirror portion at the back side of this moving reflector 201 with secondary catoptron 203.This pair catoptron 203 is rotatable with respect to moving reflector 201, and when moving reflector 201 is kept out of the way from light path of photography, and the subject light beam is when inciding on the CCD 221, and secondary catoptron 203 turns to the position that covers half-reflecting mirror portion.On the other hand, when moving reflector 201 was positioned at the shot object image observation place as shown in the figure, secondary catoptron 203 was positioned at the position that erects with respect to moving reflector 201.This moving reflector 201 is driven by shutter/mirror drive unit 303.And, on the reflected light path of secondary catoptron 203, disposing range cells 218, this range cells 218 comprises and contains the range-measuring circuit 217 (with reference to Fig. 6) of range finding with the TTL phase differential mode of sensor.Use range cells 218 detects the defocus amount by the shot object image of phtographic lens 101 imagings.

Dispose the focal plane type shutter 213 of time shutter control usefulness at the rear of moving reflector 201.This shutter 213 carries out drive controlling by the shutter control part 213a that comprises fast door drive mechanism 215 (Fig. 6) and shutter/mirror drive unit 303.Dispose CCD 221 as imaging apparatus at the rear of shutter 213.CCD 221 becomes electric signal to the shot object image opto-electronic conversion by the phtographic lens imaging.In addition, use CCD as imaging apparatus in the present embodiment, yet be not limited thereto, also can use CMOS (Complementary Metal Oxide Semiconductor: etc. two-dimentional imaging apparatus complementary metal oxide semiconductor (CMOS)).

See from the front of camera body 200 and to dispose the battery 305 that is used for power supply is offered the camera entire body in the left side.And, as described later, dispose catoptron shutter (being designated hereinafter simply as " the MS ") motor 301 of the drive source that becomes shutter 213 and moving reflector 201 on the right side of main body.Shutter/mirror drive the unit 303 that is used to transmit the driving force of this MS motor 301 is configured in the downside of MS motor 301, so that engage with the driving shaft of MS motor 301.And, dispose the shutter control part 213a of the drive controlling that is used to carry out shutter 213 in the side of moving reflector 201.

Below, use Fig. 2 A to Fig. 5 that the driving mechanism of moving reflector 201 and shutter 213 is described.

Fig. 2 A-2E is the figure that shutter 213 and moving reflector 201 are shown, Fig. 2 A is the stereographic map of shutter 213, and Fig. 2 B is the front view (FV) of shutter 213, and Fig. 2 C is the stereographic map of catoptron, Fig. 2 D is the figure of the catoptron decline state of moving reflector 201, and Fig. 2 E is the figure that the catoptron propradation is shown.

Shown in Fig. 2 A, dispose shutter control part 213a at the sidepiece of shutter 213, shutter is set the bottom that bar 213b is projected into this shutter control part 213a.Then, this shutter is set bar 213b is in the oblique line (shown in the double dot dash line) of Fig. 2 B under original state the position of position P1, and tightens the position of position P2 that completion status is moved to the solid line of Fig. 2 B at shutter.

Moving reflector 201 is under the decline state, and shown in Fig. 2 C, secondary catoptron 203 turns to the position of opening with respect to moving reflector 201.In the rotation axis side of moving reflector 201, shown in Fig. 2 D, be provided with catoptron decline spring 345, by the counter clockwise direction of this catoptron decline spring 345 in the figure, i.e. the descent direction application of force.Moving reflector 201 by these catoptron decline spring 345 application of forces is limited in the position of spending with respect to light path of photography 45 by position limit pin 349.Mirror drive bar 341 is L word shape shape, towards counterclockwise, that is, makes the ascent direction application of force of catoptron rising by mirror drive spring 343.One end of mirror drive bar 341 engages with engagement pin 347 on being installed in moving reflector 201.In addition, the spring force of mirror drive spring 343 constitutes that the spring force than catoptron decline spring 345 is strong all the time.

Under catoptron decline state, mirror drive bar 341 relies on catoptrons to tighten bar 351, overcomes the acting force of mirror drive spring 343 and rotates toward the clockwise direction, is in the position shown in Fig. 2 D.When under this state, the catoptron of fastening mirror drive bar 341 tightens bar 351 and moves to when right-hand, and mirror drive bar 341 is because the acting force of mirror drive spring 343 and towards counterclockwise rotating.Follow this rotation, moving reflector 201 turns to lifting position via engagement pin 347 from down position, is in the catoptron propradation shown in Fig. 2 E.

On the other hand, when tightening bar 351, catoptron overcomes the acting force of mirror drive spring 343 and when left moved and arrives the position of Fig. 2 D, catoptron tightens to be finished, and is in catoptron decline state from the catoptron propradation shown in Fig. 2 E.

Fig. 3 is the exploded perspective view of shutter/mirror drive unit 303 that transmits the driving force of MS motor 301.The driving force of MS motor 301 is passed to cam wheel 357 via gear 363.

The part of being described above cam wheel 357 is the part relevant with the driving of catoptron 201.Be installed with the catoptron with side face that the radial direction at the rotation axis of cam wheel 357 changes and tighten cam 353 on cam wheel 357, catoptron tightens an end of bar 351 and the cam surface 353a clamping that this catoptron tightens cam 353.This catoptron tightens the other end and 341 clampings of mirror drive bar of bar 351.Because mirror drive bar 341 is towards making catoptron tighten direction that bar 351 rotates in the clockwise direction by spring energized (with reference to Fig. 2), thereby an end and catoptron that catoptron tightens bar 351 tighten cam 353 crimping.Therefore, follow the rotation of cam wheel 357, tighten cam 353 with the catoptron of its one and rotate, the catoptron that tightens the cam surface crimping of cam 353 with this catoptron tightens bar 351 and rotates, and mirror drive bar 341 is rotated.

And the part of being described below cam wheel 357 is to tighten relevant part with shutter.Be installed with the shutter with side face that the radial direction at the rotation axis of cam wheel 357 changes and tighten the cam surface 355a of cam 355 below cam wheel 357, an end and this shutter that shutter tightens bar 361 tighten cam 355 clampings.This shutter tightens the other end and the shutter of bar 361 and sets bar 213b clamping.Therefore, follow the rotation of cam wheel 357, tighten cam 355 with the shutter of its one and also rotate, the shutter that tightens the cam surface clamping of cam 355 with this shutter tightens bar 361 and rotates, and shutter is set bar 213b and also rotated.

Fig. 4 A illustrates the cam surface that the direction from shown in the arrow that above-mentioned catoptron tightens cam 353 is seen, Fig. 4 B illustrates the cam surface that the direction from shown in the arrow that shutter tightens cam 355 is seen.Catoptron tightens the cam surface 353a of cam 353 shown in Fig. 4 A, is made of top dead centre zone a, lift cams b, lower dead center zone c, lift cams d and these 5 zones of e, top dead centre zone.And shutter tightens the cam surface 355a of cam 355 shown in Fig. 4 B, is made of top dead centre zone a, lift cams b, lower dead center zone c, lower dead center zone d and these 5 zones of e, lower dead center zone.And, although do not illustrate, however be provided with the detection of reflected mirror tighten cam 353, shutter tighten cam 355 or with the rotation of the driven member of they one or mobile a plurality of dimmers.The c that a that carries out low level output during using these dimmers in regional a detects, carry out low level output during in regional c detect and in regional e during carry out low level output e detect (with reference to Fig. 5).

In regional a, catoptron tightens cam 353 and is in top dead centre, and moving reflector 201 is in decline state (with reference to Fig. 2 D), promptly the subject light beam is reflexed to observation place (reflection position) on the finder optical system.Under this catoptron decline state,, thereby can use view finder to observe shot object image because the subject light beam is imported into finder optical system.And, because the subject light beam also is imported into photometry element 211 described later, thereby can carry out photometry, and because the subject light beam imports range cells 218 by secondary catoptron 203, thereby can find range and the driving (auto-focus adjusting) of phtographic lens to focusing position.And in regional a, shutter tightens cam 355 and also is in top dead centre, is in the state of tightening shown in the P2 of Fig. 2 B.Although shutter 213 is in the state of tightening, however shutter set bar 213b and do not keep out of the way, thereby under this state, can not carry out moving of shutter curtain, do not expose.

In regional c, catoptron tightens cam 353 and is in lower dead center, and moving reflector 201 is in propradation (with reference to Fig. 2 E), the i.e. retreating position of keeping out of the way from light path of photography.And shutter tightens cam 355 and also is in lower dead center, and shutter is set the position shown in the P1 that bar 213b is in Fig. 2 B.Becoming this zone c is the situation that moving reflector 201 is in propradation, yet it has two kinds of situations, and a kind of is usually the situation of photography, and another kind is the situation of carrying out displaying live view.Under the state of regional c, can not use view finder to observe shot object image.And because shot object image is imaged on the CCD 211 as imaging apparatus, thereby exportable image information from this CCD 221.Under the situation of displaying live view pattern, can shot object image be presented on the LCD monitor 26 according to image information from CCD 221, can carry out the observation of shot object image.And, make under the situation that 2R connects in operation by release-push 21, when shutter tightens when finishing, can carry out moving of shutter curtain.At moving of the shutter curtain of this shutter 213, can make a video recording and record by 211 pairs of still images of CCD.

In regional e, catoptron tightens cam 353 and is in top dead centre, and moving reflector 201 is in the decline state.On the other hand, shutter tightens cam 355 and is in lower dead center, and shutter is set the position shown in the P1 that bar 213b is in Fig. 2 B.

Zone b is the migration zone of regional c and regional a.In regional b, follow catoptron to tighten the rotation that cam 353 and shutter tighten cam 355, catoptron tightens the both sides that bar 351 and shutter tighten bar 361 and rotates.That is, when when regional c is moved to regional a, moving reflector 201 changes to the decline state from propradation, and shutter is set bar 213b and moved to the P2 position from the P1 position of Fig. 2 B.

By contrast, regional d is the migration zone of regional c and regional e.In regional d, follow catoptron to tighten the rotation of cam 353, cam surface 353a changes, and therefore, catoptron tightens bar 351 and rotates and make 341 rotations of mirror drive bar.On the other hand, rotate even shutter tightens cam 355, its cam surface 355a does not change yet, thereby shutter tightens bar 361 and do not rotate.That is, when when regional c is moved to regional e, moving reflector 201 changes to the decline state from propradation, yet shutter is set the P1 position that bar 213b stays Fig. 2 B.Like this, in regional b and regional d, it moves is different.

In the present embodiment, in showing, displaying live view carries out utilizing this zone d to carry out the rising/down maneuver of moving reflector 201, yet not carrying out the action that tightens of shutter 213 under the situation of auto-focus adjusting.On the other hand, when carrying out common photography action, utilize regional b to carry out the rising/down maneuver of moving reflector 201, and carry out the action that tightens of shutter 213.In addition, Fig. 4 A tightens cam 353 with catoptron among Fig. 4 B and is described with identical position, reference position each other with the relatively rotation place relation that shutter tightens cam 355.Yet, tighten the configuration that bar 351 and shutter tighten bar 361 by catoptron, also can constitute the reference position difference that makes each other.

Below, use Fig. 6 that the one-piece construction of the main electrical system of digital single-lens reflex camera is described.The digital single-lens reflex camera of present embodiment as mentioned above, is changed separately formation of camera lens 100 and camera body 200, and both are electrically connected by communication contact 300.In addition, change camera lens 100 and camera body 200 and also can constitute one.

In the internal configurations of changing camera lens 100 camera lens 101,102 that focal adjustments and focus adjustment use and the aperture 103 that is used to regulate numerical aperture are arranged.And connect according to following mode: camera lens 101 and camera lens 102 are driven by lens driving mechanism 107, and aperture 103 is driven by aperture driving mechanism 109.Lens driving mechanism 107 is connected with camera lens CPU 111 respectively with aperture driving mechanism 109, and this camera lens CPU 111 is connected with camera body 200 by communication contact 300.Camera lens CPU 111 changes the control in the camera lens 100, and controls lens driving mechanism 107 is focused and zoom drive, and control aperture driving mechanism 109 carries out f-number control.

In camera body 200, dispose moving reflector 201 as mentioned above, secondary catoptron 203, focusing glass 205 and pentaprism 207.Moving reflector 201 is driven by mirror drive mechanism 219.Dispose the eyepiece 209 that shot object image is observed usefulness in the exiting side of pentaprism 207,, photometry sensor 211 is arranged in the position configuration of the observation that does not hinder shot object image in the side of this eyepiece 209.Focusing glass 205, pentaprism 207 and eyepiece 209 constitute the part of finder optical system.

And, as mentioned above, be provided with secondary catoptron 203 at the back side of moving reflector 201, dispose the range-measuring circuit 217 that comprises the sensor of focusing at the reflection direction of this pair catoptron 203.And, disposing shutter 213 at the rear of moving reflector 201, this shutter 213 carries out drive controlling by fast door drive mechanism 215.And, dispose CCD 221 as imaging apparatus at the rear of shutter 213, the shot object image opto-electronic conversion by camera lens 101,102 imagings is become electric signal.CCD221 is connected with CCD driving circuit 223, carries out analog digital conversion (AD conversion) by this CCD driving circuit 223.CCD driving circuit 223 is connected with image processing circuit 227 via CCD interface 225.This image processing circuit 227 carries out color correction, gamma (γ) is proofreaied and correct and the various Flame Image Process of contrast correction.And, also carry out the generation of the view data of the displaying live view demonstration usefulness in the LCD monitor 26.

(Application Specific Integrated Circuit: the integrated circuit of special-purpose) data bus 261 in 271 is connected for image processing circuit 227 and ASIC.This data bus 261 also connects fuselage CPU 229, compressor circuit 231, flash memory control circuit 233, SDRAM control circuit 236, imput output circuit 239, telecommunication circuit 241, recording medium control circuit 243, video signal output circuit 247 and switch testing circuit 253 except image processing circuit 227.

The flow process of fuselage CPU 229 these numeral single-lens reflex cameras of control that are connected with data bus 261.And the compressor circuit 231 that is connected with data bus 261 is to be used for and will to be stored in the circuit that SDRAM 237 interior view data are compressed with JPEG or TIFF mode.In addition, compression of images is not limited to JPEG and TIFF, also can use other compression methods.The flash memory control circuit 233 that is connected with data bus 261 is connected with flash memory (Flash Memory) 235.This flash memory 235 stores the program of the flow process that is used to control single-lens reflex camera, and fuselage CPU 229 carries out the control of digital single-lens reflex camera according to the programs that are stored in this flash memory 235.In addition, flash memory 235 is can the electric nonvolatile memory of rewriting.SDRAM 237 is connected with data bus 261 via SDRAM control circuit 236.This SDRAM 237 be used for interim storage by image processing circuit 227 carried out after the Flame Image Process view data or by the memory buffer of view data after compressor circuit 231 compressions.

The imput output circuit 239 that is connected with above-mentioned photometry sensor 211, fast door drive mechanism 215, range-measuring circuit 217 and mirror drive mechanism 219 is via the data input and output between each circuit of data bus 261 controls and fuselage CPU 229 etc.Be connected with data bus 261 via the telecommunication circuit 241 that is connected with camera lens CPU 111 of communication contact 300, carry out with fuselage CPU 229 grades between exchanges data and the communicating by letter of control command.The recording medium control circuit 243 that is connected with data bus 261 is connected with recording medium 245, the records in this recording medium 245 such as control view data.Recording medium 245 is recording mediums rewritten of xD Picture Card (registered trademark), Compact Flash (registered trademark), SD Memory Card (registered trademark) or Memory Stick (registered trademark) etc.Recording medium 245 can be seated on the camera body 200 and disassembled and assembled freely.In addition, can constitute via communication contact connection hard disk.

The video signal output circuit 247 that is connected with data bus 261 is connected with LCD monitor 26 via LCD monitor driving circuit 249.Video signal output circuit 247 is to be used for the view data that is stored in SDRAM 237 and the recording medium 245 is converted to the circuit that is used to be presented at the vision signal on the LCD monitor 26.LCD monitor 26 is configured in the back side of camera body 200, however so long as the observable position of cameraman just is not limited to the back side, and be not limited to liquid crystal, also can be other display device.What various switches 255 comprised the switch of the switch of switch, the indication reproduction mode of the 1st stroke that detects shutter release button and the 2nd stroke, instructs cursor moves on the picture of LCD monitor 26 switch, indication photograph mode and determined selected each pattern etc. determines (OK) switch etc.Various switches 255 are connected with data bus 261 via switch testing circuit 253.

Use Fig. 7 that the flow process that displaying live view shows is described below.When by not the making illustrated action button and enter displaying live view and show of operate camera main body 200, at first, carry out the initial setting (S1) that is used to carry out displaying live view.In this initial setting, CCD 221 is carried out power supply supply with, and carry out the setting of displaying live view display condition, suitably to keep the brightness of the displaying live view demonstration in the LCD monitor 26.And, also carry out the catoptron vertical motion of moving reflector 201 and the opening of shutter 213 etc.About the latter, use Fig. 8 to describe in the back.In addition, the beginning displaying live view shows in this displaying live view initial setting.Then, judge half push that whether has carried out release-push 21, promptly whether 1R connects (S3).In result of determination is under the situation about connecting, and enters step S5, carries out the subroutine that auto-focus is regulated (AF).In this subroutine, on LCD monitor 26, in the displaying live view shot object image, carry out auto-focus adjusting and photometry action, about details, use Fig. 9 to describe in the back.

When the auto-focus among the step S5 is regulated (AF) end, next, judge the full push that whether has carried out release-push 21, that is, whether 2R connects (S7).In result of determination is under the situation of 2R connection, enters step S9, carries out the photography action.About the subroutine of this photography action, use Figure 10 to describe in the back.When the photography release, get back to the displaying live view initial setting of step S1, repeat above-mentioned steps.

Under the situation that 2R disconnects in step S7, enter step S11, judge whether 1R connects.Do not press entirely under the situation of release-push 21 partly pressing, be in the waiting status of the judgement of carrying out step S7 and step S11.When cameraman's hand leaves release-push 21, get back to step S3, repeat above-mentioned steps.

Under the situation that 1R disconnects in step S3, enter step S13, judge and whether carried out the switching of display mode, promptly the optics that whether switches in the finder optical system by the demonstration of not making the shot object image of illustrated action button from displaying live view shows.Under the situation of not carrying out the display mode switching, get back to step S3.On the other hand, under the situation of having switched display mode, the power supply that carries out CCD 221 in step S15 stops the processing of grade, shows with the displaying live view that stops the shot object image on the LCD monitor 26.The beginning displaying live view shows in the displaying live view initial setting of step S1, in this step S15 till stop displaying live view and show during, according to the camera data that repeats to obtain by CCD221, on LCD monitor 26, carry out the displaying live view demonstration continuously.Next, in step S17, carry out the initialization of shutter 213 and moving reflector 201.This is to be used for when carrying out displaying live view, turns back to optical finder to observe shot object image and make LCD monitor 26 show the processing of the display mode information of photographic information.The moving reflector 201 that has been moved to lifting position (reflection position) is moved to down position.When this initialization, drive MS motor 301, tighten cam 353 and shutter up to above-mentioned catoptron and tighten bar 361 and move and arrive regional a from regional c.

About the displaying live view initial setting of above-mentioned steps S1, use process flow diagram shown in Figure 8 and sequential chart shown in Figure 11 to describe in detail.Before carrying out displaying live view, catoptron tightens cam 353 and shutter tightens cam 355 in regional a.When carrying out the initialization of displaying live view, MS motor 301 is driven into cam wheel 357 the regional c that carries out displaying live view.At first, to the shutter magnet Mg power supply that is used to keep shutter curtain, curtain and back curtain (S21) before keeping.Afterwards, make MS motor 301 counter-rotating (t1 of Figure 11), catoptron is tightened cam 353 and shutter tighten cam 355 and be driven into regional c (S23) through regional b from regional a.Therebetween, mirror drive bar 341 moves to the position of Fig. 2 E from the position of Fig. 2 D, and moving reflector 201 rotates to (keeping out of the way) position of rising owing to the spring force of mirror drive spring 343.

And shutter is set bar 213b and is moved to the P1 position from the P2 position of Fig. 2 B.When arriving regional c (S25, the t2 of Figure 11), stop the rotation (S27) of MS motor 301.Thus, moving reflector 201 is in rising (keeping out of the way) position, and shutter is set bar 213b and arrived retreating position (P1).

Next, disconnect the power supply of the magnet Mg of curtain maintenance usefulness in front of the door soon of shutter 213, making soon in front of the door, curtain moves (S29).When the mobile end of fast curtain in front of the door (t3 of Figure 11), shutter 213 is in full-gear, and shot object image is imaged on the CCD 221, thereby begins to read from the CCD 221 as imager image information (S31).On LCD monitor 26, carry out displaying live view according to this image information of reading and show (S33).Show in order to carry out displaying live view, repeat reading (for example 30 frame/seconds) of image information, show as dynamic image from CCD 221.

Below, the action of using process flow diagram shown in Figure 9 and sequential chart shown in Figure 11 the auto-focus of step S5 to regulate (AF) is described in detail.This subroutine is when partly pressing release-push 21 as mentioned above, and moving reflector 201 is descended, and finds range and the subroutine of photometry.At first, make the displaying live view that is presented on the LCD monitor 26 freeze (fixing) (S41).This is at because moving reflector 201 descends, and can not obtain the countermeasure that image information is interrupted displaying live view thereby shot object image is not imaged on the CCD 221.Next, begin the counter-rotating (S43, the t11 of Figure 11) of MS motor 301, and stop reading (S45) from CCD 221.

In the counter-rotating of MS motor 301, catoptron is tightened cam 353 and shutter tighten cam 355 and be driven into regional e through regional d from regional c.Therebetween, move to the position of Fig. 2 D mirror drive bar 341 position from Fig. 2 E when mirror drive spring 343 is tightened, and moving reflector 201 is owing to the spring force of catoptron decline spring 345 drops to down position (reflection position).And shutter is set the P1 position that bar 213b stays above-mentioned Fig. 2 B, is in shutter and tightens uncompleted state.When arriving regional e (S47, the t12 of Figure 11), stop the rotation of MS motor 301.Thus, moving reflector 201 is in the decline state, and shutter setting bar 213b still is in retreating position (P1) (shutter tightens and do not finish).

Range cells 218 receives shot object image, the action (S51) of finding range via moving reflector 201 and secondary catoptron 203.By the range finding action, detect the defocus amount of phtographic lens 101, the drive amount that fuselage CPU 229 computings are used to focus, camera lens CPU 111 carries out auto-focus via lens driving mechanism 107 and regulates (S53).And 211 pairs of parts from the subject light beam of moving reflector 201 derivation of photometry element are carried out photometry (S51), and fuselage CPU 229 is according to the exposure value of this light value computing shutter speed and f-number etc.

Then, just changeing driving MS motor 301 (S55, the t13 of Figure 11).This is that catoptron tightens cam 353 and shutter tightens the operation that cam 355 is got back to regional c from regional e through regional d with in the past opposite.Therebetween, moving reflector 201 is got back to lifting position from down position.On the other hand, shutter is set bar 213b and still is in retreating position (P1), and shutter tightens not to be finished.When arriving regional c (S57, the t14 of Figure 11), stop the rotation (S59) of MS motor 301.Afterwards, the image information from CCD 221 of restarting to have stopped in step S45 is read (S61, the t14 of Figure 11), carries out displaying live view and show (S63) on LCD monitor 26.That is, remove the frozen state of LCD monitor 26.

In addition, during moving reflector 201 was in reflection position, the range finding action must finish, yet even during moving reflector 201 is kept out of the way action, also can carry out the lens driving action.Therefore, in Figure 11, moving reflector 201 keep out of the way action after also proceed lens driving (LD).So long as after displaying live view restarted, the cameraman just can observe the situation of focusing by LCD monitor 26.

Below, use process flow diagram shown in Figure 10 and sequential chart shown in Figure 11 to come the photography action of step S9 is described in detail.This subroutine is when pressing release-push 21 entirely in displaying live view, to obtain still image according to the output from CCD 221 as mentioned above, and in the subroutine of recording medium 245 enterprising line items.Displaying live view is to carry out in catoptron tightens the regional c that cam 353 and shutter tighten cam 355.When having indicated when action shooting, catoptron tightens cam 353 and shutter and tightens cam 355 and temporarily be driven to regional a.Then, having carried out being driven into regional c once more after shutter tightens, obtain the image information of still image.

At first, make MS motor 301 just change (S71, the t21 of Figure 11), catoptron is tightened cam 353 and shutter tighten cam 355 and be driven into regional a through regional b from regional c.Thus, moving reflector 201 is followed the driving of mirror drive bar 341 and is in the decline state, and shutter sets bar 213b and move to shutter and tighten completing place (P2 of Fig. 2 B), and shutter is tightened.

When detecting the regional a of arrival (S73, the t22 of Figure 11), stop the rotation of MS motor 301.Next, keep the magnet Mg of usefulness to power, curtain and back curtain (S77) before keeping to fast curtain in front of the door and back curtain.Afterwards, the inversion driving (S79, the t23 of Figure 11) of beginning MS motor 301.By this inversion driving, catoptron tightens cam 353 and shutter and tightens cam 355 and get back to regional c from regional a once more through regional b.In this process, moving reflector 201 moves to rising (keeping out of the way) position from (reflection) position that descends, and shutter setting bar 213b moves to retreating position (P1).

When arriving regional c (S81, the t24 of Figure 11), stop the inversion driving (S83) of MS motor 301.Under this state, moving reflector 201 is kept out of the way from light path of photography, but shutter 213 is in exposure status, thereby moves on to exposure actions (S85).At first, stop to keep the fast energising of the magnet Mg of curtain in front of the door, mobile (t25 of Figure 11) of the fast curtain in front of the door of beginning.When with the shutter speed time corresponding of computing in advance through out-of-date, the moving of the fast curtain behind the door of beginning (t26 of Figure 11).After the mobile beginning of fast curtain behind the door, when effluxion that the back curtain finishes, just changeing driving MS motor 301 (S87), make catoptron tighten cam 353 and shutter and tighten cam 355 and move to regional a through regional b from regional c.Therebetween, moving reflector 201 is driven to down position, and shutter 213 carries out shutter and tightens.When detecting (S89) when being regional a, the just commentaries on classics that stops MS motor 301 drives (S91).And, MS motor 301 just change in the driving in, the image information (S93) of from CCD 221, reading still image, the demonstration of fixing time in LCD monitor 26 enterprising professional etiquettes.After MS motor 301 stops (S91), the displaying live view initial setting of execution in step S1.That is, make catoptron tighten cam 353 and shutter and tighten cam 355 and get back to regional c, restart displaying live view from regional a.

As mentioned above, in the displaying live view pattern in the 1st embodiment of the present invention, carry out auto-focus at half push and regulate under the situation of action (S5), moving reflector 201 is inserted in the light path of photography, form the observation place according to release-push 21.Thus, make range cells 218 be in operating state, can carry out auto-focus and regulate action.And the while, but photometry element 211 also is in operating state, can carry out photometry.And when carrying out these actions, moving reflector 201 is driven, and shutter 213 is not done any driving.Like this in displaying live view, tighten owing to do not carry out unwanted shutter, thereby the load of drive source alleviates, can reduce time lag and energy loss.

From Fig. 5 also as can be seen, carry out tightening among the regional b with the driving of moving reflector 201 of shutter 213 at the same time, its cam degree of tilt is more slow.Its result needs the time although drive, and can reduce energy loss.By contrast, the regional d that only carries out the driving of moving reflector 201 in displaying live view can make the cam degree of tilt steeper.Its result between driving when not required, can reduce time lag.

Below, use Figure 12 that the 2nd embodiment of the present invention is described.In the 1st embodiment of the present invention, carry out by partly pressing the so-called single AF that release-push 21 carries out 1 auto-focus adjusting.The 2nd embodiment is an example of carrying out the continuous AF that also carries out the auto-focus adjusting except single AF continuously.The part of the flow process that is not both displaying live view display mode shown in Figure 7 of the 2nd embodiment and the 1st embodiment, identical with the 1st embodiment in addition, thereby be that the center describes with the difference.

In displaying live view display mode shown in Figure 12, give identical number of steps to the step identical, and omit explanation with the flow process of Fig. 7.When the displaying live view initial setting of step S1 finishes, judge by not making the AF pattern that illustrated AF mode initialization member sets.In the present embodiment, as the AF pattern, can only set single AF pattern and continuous these two kinds of patterns of AF pattern.In step S101, be judged to be under the situation of single AF, enter step S3, under single AF pattern, handle.Because this single AF pattern is identical with the 1st embodiment, thereby omit explanation.

Being judged to be in step S101 and not being single AF pattern, promptly is under the situation of continuous AF pattern, enters step S103, judges whether partly press release-push 21, and promptly whether 1R connects.Under the situation that 1R disconnects, get back to step S101, be in waiting status up to partly pressing release-push 21.On the other hand, when 1R connects, enter step S105, the subroutine that execution graph 9 illustrated auto-focus are regulated (AF).That is, make moving reflector 201 turn to the observation place from retreating position, the output according to range-measuring circuit 217 under this state is driven into focusing position to phtographic lens 101.When this AF release, next, judge that in step S107 whether 1R connects, and leaves at hand under the situation of release-push 21, gets back to step S101, repeats above-mentioned steps.On the other hand, under the situation that half down state of release-push 21 continues, judge whether supress release-push 21 entirely in step S109, promptly whether 2R connects, and under the situation that 2R connects, transfers to step S9, equally with the 1st embodiment carries out the photography action.On the other hand, under the situation that 2R disconnects, enter step S111, judge whether timer has passed through the stipulated time.Do not passing through under the situation of stipulated time, turning back to step S107, judging the state of 1R.On the other hand, in step S111, passed through under the situation of stipulated time, timer is resetted and started, turned back to step S105, the subroutine that execution graph 9 illustrated auto-focus are regulated (AF).The AF pattern is the pattern that repeats single AF with specific time interval continuously, by step S111 and S113 this stipulated time is carried out timing.

In the central AF pattern of carrying out the displaying live view pattern during from continuous AF mode altering to single AF pattern, in step S101, transfer to step S3, and when from single AF mode altering to continuous AF pattern, in step S101, transfer to step S103, carry out the change of AF pattern respectively.

As mentioned above, in the 2nd embodiment, under the situation of carrying out displaying live view, under the situation of having set single AF pattern, moving reflector 201 moves to reflection position in response to partly pressing of release-push 21 from retreating position, regulates thereby can carry out auto-focus.And under the situation of having set continuous AF pattern, during partly pressing release-push 21, moving reflector 201 moves to reflection position with specific time interval and carries out the auto-focus adjusting.

In the of the present invention the 1st and the 2nd embodiment, when carrying out displaying live view, under the situation of carrying out the auto-focus adjusting, make moving reflector 201 move to the observation place, can make range-measuring circuit 217 action, even thereby the displaying live view pattern also can carry out auto-focus and regulate, very convenient.And, in the 1st and the 2nd embodiment, during the driving of the moving reflector 201 when the displaying live view pattern, can separately carry out shutter and tighten action, thereby can lighten the load, can shorten time lag.

And, utilize catoptron to tighten cam 353 dexterously and shutter tightens rotating and reverse of cam 355, under the situation of usually photography, carry out catoptron and tighten with shutter and tighten, under the situation of displaying live view, only carry out catoptron and tighten, thereby can realize simply constituting and miniaturization.

In addition, in the of the present invention the 1st and the 2nd embodiment, adopted catoptron to tighten cam 351 and shutter tightens cam 355 these two kinds of cams, yet be not limited thereto, for example, also can use 1 cam area dividing as catoptron tighten with and shutter tighten usefulness.And the AF that utilizes rotating and reverse of above-mentioned cam to carry out when the transfer of displaying live view and displaying live view switches, and switches yet also can utilize planet wheel to wait.In any case, tighten, during AF action when displaying live view, only make the driving mechanism action of moving reflector 201 and do not carry out shutter and tighten and get final product so long as to the transfer of displaying live view the time, carry out the driving and the shutter of moving reflector 201.

And in the 1st and the 2nd embodiment, imaging apparatus is a CCD 221, yet certainly, carries out the camera that displaying live view shows and also can use even switch the output of a plurality of imaging apparatuss.

And in the 1st and the 2nd embodiment, moving reflector 201 switches to finder optical system and imaging apparatus to light path, yet be not limited thereto, for example, switch to imaging apparatus and the shot object image that image recording uses and observe the imaging apparatus of usefulness, also can use the present invention even constitute.And in the present embodiment, moving reflector 201 carries out catoptron and tightens when catoptron rises, yet otherwise also can carry out catoptron when catoptron descends and tighten.

And, in the 1st and the 2nd embodiment, the action of finding range under the state that moving reflector 201 descends when AF, however be not limited thereto the both sides of the focusing action of also can under catoptron decline state, find range action and phtographic lens.

As mentioned above, in the 1st and the 2nd embodiment, camera has: moving reflector 201, its rotation by MS motor 301 are movable to make from the beam reflection of phtographic lens 101 and import the observation place (down position) of viewing optical system and from the retreating position (lifting position) kept out of the way in the zone of passing through from the light beam of phtographic lens 101; Focusing is with sensor (inside of range-measuring circuit 217), and it is used to make phtographic lens 101 subject of focusing; Focusing is with catoptron (secondary catoptron 203), and itself and moving reflector 201 interlocks import focusing sensor (inside of range-measuring circuit 217) to the light beam from phtographic lens 101 when moving reflector 201 is in observation place (down position); Auto-focus adjusting portion (for example, fuselage CPU 229, camera lens CPU 111, lens driving mechanism 107), its output according to the focusing sensor is driven into focusing position to phtographic lens; Imaging apparatus (CCD 221), it is configured in the rear of moving reflector 201, receives to make a video recording from the subject light beam of phtographic lens 101; Shutter, it is configured between moving reflector 201 and the imaging apparatus; And driving mechanism, it at image displaying part (is for example worked as, when the dynamic image that carries out being made a video recording by imaging apparatus (CCD 221) LCD monitor 26) carries out the focusing of phtographic lens 101 when showing, make the action of auto-focus adjusting portion, and moving reflector 201 is driven into retreating position (lifting position), do not carry out tightening of shutter 213, and moving reflector 201 is driven into observation place (down position).Thus, can provide a kind of range finding when action when displaying live view, not drive shutter and tighten bigger load with the driving both sides of moving reflector, and reduced the camera capable of displaying live view of time lag and energy loss.

And in the 1st and the 2nd embodiment, camera has: MS motor 301 that can positive and negative rotation; Observe the viewing optical system (finder optical system) of the imaging of phtographic lens 101; Moving reflector 201, its rotation by MS motor 301 are movable to make from the beam reflection of phtographic lens 101 and import the observation place (down position) of viewing optical system and from the retreating position (lifting position) kept out of the way in the zone of passing through from the light beam of phtographic lens; Focusing is with sensor (inside of range-measuring circuit 217), and it is used to make the phtographic lens subject of focusing; Focusing is with catoptron (secondary catoptron 203), and itself and moving reflector 201 interlocks import the light beam from phtographic lens 101 to focus when moving reflector is in observation place (down position) and use sensor; Imaging apparatus (CCD 221), it is configured in the rear of moving reflector 201, receives when moving reflector 201 is in retreating position (lifting position) and makes a video recording from the subject light beam of phtographic lens 101; Image displaying part (for example, LCD monitor 26), it is used for the subject image by imaging apparatus (CCD221) shooting is shown as dynamic image; Focusing beginning portion (for example, the 1R of release-push 21), it is used to make phtographic lens 101 to begin the subject of focusing; Shutter 213, it is configured between moving reflector 201 and the imaging apparatus, and the rotation by MS motor 301 tightens; Mirror drive cam (catoptron tightens cam 353), its have the 1st cam part that makes moving reflector 201 be positioned at observation place (down position) (regional a), with the 1st cam part continuously and make moving reflector 201 be positioned at retreating position (lifting position) the 2nd cam part (regional c) and with the 2nd cam part continuously and moving reflector is driven into the 3rd cam part (regional e) of observation place (down position); Shutter tightens cam 355, and it has and the 1st cam part (the non-cam part (regional d) that tightens that the regional shutter that a) synchronously shutter is tightened tightens cam part (regional b) and synchronously shutter do not tightened with above-mentioned the 2nd cam part and above-mentioned the 3rd cam part; And control part, it carries out following control, that is: (1) is when utilizing imaging apparatus to carry out the still image shooting, make the 301 positive and negative rotations of MS motor, between the 1st cam part of mirror drive cam (catoptron tightens cam 353) and the 2nd cam part, move back and forth, make moving reflector 201 carry out moving between observation place and retreating position, and its shutter that synchronously tightens cam 355 at shutter tightens cam part and non-tightening between the cam part moves back and forth, repeat tightening of shutter 213, (2) when carrying out the focusing of phtographic lens in the dynamic image demonstration of on image displaying part, carrying out by the imaging apparatus shooting, make the positive and negative rotation of MS motor in response to the output of focusing beginning portion, carry out the to-and-fro movement of the 2nd cam part and the 3rd cam part of mirror drive cam, make moving reflector 201 carry out moving between observation place and retreating position, synchronously carry out the non-to-and-fro movement that tightens cam part that shutter tightens cam with it, do not carry out tightening of shutter 213.Therefore, when the range finding when displaying live view is moved, do not drive shutter and tighten so bigger load, can reduce time lag and energy loss, particularly, can realize small-sized and cheap by using cam part with the driving both sides of moving reflector.

And in the 1st and the 2nd embodiment, camera has: moving reflector 201, its be movable on the light path of photography of phtographic lens 101 the 1st position (down position) and from the 2nd position (lifting position) that this light path of photography is kept out of the way; Imaging apparatus (CCD 221), it is configured on the light path of photography of phtographic lens 101, receives the shot object image by the phtographic lens imaging, and the output photoelectric conversion signal; Shutter 213, it is configured between this imaging apparatus and the moving reflector, is used to control the time shutter of the above-mentioned shot object image on the imaging apparatus; Display device (LCD monitor 26), it is used for showing shot object image according to the photoelectric conversion signal displaying live view; And drive control part (fuselage CPU 229), it is when carrying out the displaying live view demonstration, moving reflector 201 is driven into the 2nd position (lifting position), and shutter 213 is driven into open state (S1), under the situation of moving of in displaying live view shows, finding range (S5), do not carry out the action that tightens of above-mentioned shutter, and make moving reflector move to the 1st position (S43) from the 2nd position.Therefore, when the range finding action, only carry out the driving of moving reflector, can lighten the load, and can reduce time lag and energy loss.

Although above preferred implementation of the present invention has been done diagram and explanation, yet be construed as without departing from the spirit of the invention certainly, can carry out various distortion and change on form and the details easily.Therefore, be intended that to make and the invention is not restricted to illustrated and illustrated exact form, contain all distortion that to receive within the scope of the appended claims but constitute.

Claims

1. camera capable of displaying live view, this camera has:

Motor that can positive and negative rotation;

Observe the viewing optical system of the imaging of phtographic lens;

Moving reflector, its rotation by said motor is movable to upper/lower positions: make beam reflection from above-mentioned phtographic lens import to the observation place of viewing optical system and from the retreating position that keep out of the way in the zone that passes through from the light beam of phtographic lens;

Sensor is used in focusing, and it is used to make the above-mentioned phtographic lens subject of focusing;

Catoptron use in focusing, itself and above-mentioned moving reflector interlock, and handle imports to above-mentioned focusing sensor from the light beam of phtographic lens when above-mentioned moving reflector is in above-mentioned observation place;

Imaging apparatus, it is configured in the rear of above-mentioned moving reflector, receives when above-mentioned moving reflector is in above-mentioned retreating position and makes a video recording from the subject light beam of above-mentioned phtographic lens;

Image displaying part, it is used to show the subject image by above-mentioned imaging apparatus shooting;

The focusing starting apparatus, it is used to make above-mentioned phtographic lens to begin subject is focused; And

Shutter, it is configured between above-mentioned moving reflector and the above-mentioned imaging apparatus, and the rotation by said motor tightens;

It is characterized in that above-mentioned camera capable of displaying live view also has:

The mirror drive cam, its have the 1st cam part that makes above-mentioned moving reflector be positioned at above-mentioned observation place, with the 1st cam part continuously and make above-mentioned moving reflector be positioned at above-mentioned retreating position the 2nd cam part and with the 2nd cam part continuously and above-mentioned moving reflector is driven into the 3rd cam part of observation place;

Shutter tightens cam, and it has the non-cam part that tightens that the shutter that synchronously shutter is tightened with above-mentioned the 1st cam part tightens cam part and synchronously shutter do not tightened with above-mentioned the 2nd cam part and above-mentioned the 3rd cam part; And

Control device, it carries out following control: when utilizing above-mentioned imaging apparatus to carry out the still image shooting, make the positive and negative rotation of said motor, between the 1st cam part of above-mentioned mirror drive cam and the 2nd cam part, move back and forth, make above-mentioned moving reflector carry out moving between above-mentioned observation place and above-mentioned retreating position, and its shutter that synchronously tightens cam at shutter tightens cam part and non-tightening between the cam part moves back and forth, carry out tightening of above-mentioned shutter, when on above-mentioned image displaying part, utilizing above-mentioned imaging apparatus to carry out carrying out the focusing of above-mentioned phtographic lens when dynamic image shows, make the positive and negative rotation of said motor in response to the output of above-mentioned focusing starting apparatus, carry out to-and-fro movement in the 2nd cam part and the 3rd cam part of above-mentioned mirror drive cam, make above-mentioned moving reflector carry out moving between above-mentioned observation place and above-mentioned retreating position, synchronously carry out the non-to-and-fro movement that tightens cam part that shutter tightens cam with it, do not carry out tightening of above-mentioned shutter.

2. camera capable of displaying live view according to claim 1, wherein,

Above-mentioned mirror drive cam and shutter tighten cam and are made of the cam member of one rotation.

3. single-lens reflex camera capable of displaying live view, this camera has:

Moving reflector, its rotation by motor is movable to upper/lower positions: make beam reflection from phtographic lens import to the observation place of viewing optical system and from the retreating position that keep out of the way in the zone that passes through from the light beam of above-mentioned phtographic lens;

Image display device, it is used to show the subject image by above-mentioned imaging apparatus shooting;

Catoptron use in focusing, itself and above-mentioned moving reflector interlock, and handle imports to above-mentioned focusing sensor from the light beam of above-mentioned phtographic lens when above-mentioned moving reflector is in above-mentioned observation place;

Automatic focus-regulating device, its output according to above-mentioned focusing sensor is driven into focusing position to above-mentioned phtographic lens; And

Shutter, it is configured between above-mentioned moving reflector and the above-mentioned imaging apparatus;

Drive unit, it is when carrying out the focusing of above-mentioned phtographic lens in the dynamic image demonstration of carrying out by above-mentioned imaging apparatus shooting on above-mentioned image displaying part, make above-mentioned automatic focus-regulating device action, and after above-mentioned moving reflector is driven into above-mentioned retreating position, do not carry out tightening of above-mentioned shutter, and above-mentioned moving reflector is driven into above-mentioned observation place.

4. camera capable of displaying live view according to claim 3, this camera also has: the focusing starting apparatus, it is used to make above-mentioned phtographic lens to begin subject is focused, wherein,

Above-mentioned drive unit begins indication according to the above-mentioned focusing of this focusing starting apparatus, does not carry out tightening of above-mentioned shutter, and above-mentioned moving reflector is driven into above-mentioned observation place.

5. camera capable of displaying live view according to claim 3, wherein,

Above-mentioned drive unit is driven into above-mentioned observation place to above-mentioned moving reflector every specific time interval, and does not carry out tightening of above-mentioned shutter.

6. camera capable of displaying live view according to claim 3, wherein,

Above-mentioned drive unit comprises the mirror drive cam and shutter tightens cam, and this mirror drive cam and this shutter tighten cam and be made of the cam member of one rotation.

7. camera capable of displaying live view, this camera has:

Moving reflector, it is movable to the 1st position on the light path of photography of phtographic lens and the 2nd position of keeping out of the way from this light path of photography;

Imaging apparatus, it is configured on the above-mentioned light path of photography of above-mentioned phtographic lens, receives the shot object image by above-mentioned phtographic lens imaging, and the output photoelectric conversion signal;

Shutter, it is configured between this imaging apparatus and the above-mentioned moving reflector, controls the time shutter of the above-mentioned shot object image on the above-mentioned imaging apparatus; And

Display device, it is used for showing above-mentioned shot object image according to above-mentioned photoelectric conversion signal displaying live view;

Driving control device, it is carrying out above-mentioned displaying live view when showing, above-mentioned moving reflector is driven into above-mentioned the 2nd position, and above-mentioned shutter is driven into open state, under the situation of moving of in above-mentioned displaying live view shows, finding range, do not carry out the action that tightens of above-mentioned shutter, and make above-mentioned moving reflector move to above-mentioned the 1st position from above-mentioned the 2nd position.

8. camera capable of displaying live view according to claim 7, wherein,

Above-mentioned moving reflector has mirror drive mechanism, and its above-mentioned moving reflector is driven into above-mentioned the 1st position and above-mentioned the 2nd position;

Above-mentioned shutter has and is used to carry out the shutter cocking mechanism that shutter tightens;

Above-mentioned driving control device does not drive above-mentioned shutter cocking mechanism under the situation of carrying out above-mentioned range finding action, and only drives above-mentioned mirror drive mechanism.

9. camera capable of displaying live view according to claim 8, wherein,

Above-mentioned driving control device only drives mirror drive mechanism and makes above-mentioned moving reflector get back to above-mentioned the 2nd position after above-mentioned range finding release, restarts above-mentioned displaying live view and shows.

10. camera capable of displaying live view according to claim 8, wherein,

Above-mentioned driving control device drives mirror drive mechanism and makes above-mentioned catoptron get back to above-mentioned the 2nd position after above-mentioned range finding release, and phtographic lens is driven to focusing position.

11. a camera, it can come the image that is repeated to obtain by imaging apparatus displaying live view to be presented on the display device as dynamic image, and this camera has:

Mirror drive mechanism, the moving reflector of its drive arrangements on light path of photography;

The shutter cocking mechanism, its shutter that is used to control at the time shutter of above-mentioned imaging apparatus tightens;

Single drive source; And

Driving force is transmitted switching mechanism, and it is at above-mentioned mirror drive mechanism and above-mentioned shutter cocking mechanism, and the transmission of above-mentioned drive source drives power is switched to above-mentioned two mechanisms or only above-mentioned mirror drive mechanism;

Driving control device, it is when displaying live view shows switching, transmit the both sides that switching mechanism is delivered to driving force above-mentioned mirror drive mechanism and above-mentioned shutter cocking mechanism by driving force, when auto-focus when displaying live view shows is regulated, transmit switching mechanism by driving force driving force only is delivered to above-mentioned mirror drive mechanism.

12. a camera capable of displaying live view, this camera has:

Moving reflector, it enters into the reflection position that is driven to this light beam of reflection from the light beam of phtographic lens and from the retreating position that keep out of the way in the zone that passes through from the light beam of phtographic lens; And

Shutter, it is configured in the rear of this moving reflector;

Motor that can positive and negative rotation;

Cam member, it has positive and reverse return by said motor and transfers and carry out tightening and the both sides' of the driving of above-mentioned moving reflector the 1st drive part and the 2nd drive part that transfers the driving of only carrying out above-mentioned moving reflector by the positive and reverse return of said motor of above-mentioned shutter; And

Control device, when photographing usually, this control device rotates said motor to select above-mentioned the 1st drive part of above-mentioned cam member, and the auto-focus when displaying live view is when regulating, this control device rotates said motor to select above-mentioned the 2nd drive part of above-mentioned cam member, and the above-mentioned cam member of drive controlling.

13. a camera capable of displaying live view, this camera has:

Moving reflector, it enters into the reflection position that is driven to this light beam of reflection from the light beam of phtographic lens and from the retreating position that keep out of the way in the zone that passes through from the light beam of phtographic lens;

Imaging apparatus, it is configured in the rear of this moving reflector, receives when above-mentioned moving reflector is in above-mentioned retreating position and makes a video recording from the subject light beam of above-mentioned phtographic lens; And

Motor that can positive and negative rotation;

The mirror drive cam, its have the 1st cam part that makes above-mentioned moving reflector be positioned at above-mentioned reflection position, with the 1st cam part continuously and make above-mentioned moving reflector be positioned at above-mentioned retreating position the 2nd cam part and with the 2nd cam part continuously and above-mentioned moving reflector is driven into the 3rd cam part of reflection position;

Control device, it is when utilizing above-mentioned imaging apparatus to carry out the still image shooting, make the positive and negative rotation of said motor, between the 1st cam part of above-mentioned mirror drive cam and the 2nd cam part, move back and forth, make above-mentioned moving reflector carry out moving between above-mentioned reflection position and the above-mentioned retreating position, and its shutter that synchronously tightens cam at above-mentioned shutter tightens cam part and non-tightening between the cam part moves back and forth, repeat tightening of above-mentioned shutter, when the dynamic image that carries out above-mentioned imaging apparatus on above-mentioned image displaying part shows, make the positive and negative rotation of said motor, between the 2nd cam part of above-mentioned mirror drive cam and the 3rd cam part, move back and forth, make above-mentioned moving reflector carry out moving between above-mentioned reflection position and above-mentioned retreating position, synchronously carry out the non-to-and-fro movement that tightens cam part that shutter tightens cam with it, do not carry out tightening of above-mentioned shutter.

14. according to claim 12 or 13 described camera capable of displaying live views, wherein,

Above-mentioned mirror drive cam and above-mentioned shutter tighten cam and are made of the cam member of one rotation.

15. one kind in single-lens reflex camera, drive the independent gear that the 2nd cam that the 1st cam make principal reflection mirror drive usefulness and shutter tighten usefulness is connected, optionally carry out the driving of principal reflection mirror and the method that shutter tightens, wherein,

The cam surface of above-mentioned the 1st cam is divided into major diameter zone, minor axis zone and the migration zone between above-mentioned major diameter zone and minor axis zone according to the radius distance of distance rotation axis;

The cam surface of above-mentioned the 2nd cam is divided into major diameter zone, minor axis zone and the migration zone between above-mentioned major diameter zone and minor axis zone according to the radius distance of distance rotation axis;

This method comprises:

In the 1st scope, drive said gear, shutter is not tightened and drive principal reflection mirror, wherein, the 1st scope be the principal reflection mirror cam surface that drives the member of usefulness and above-mentioned the 1st cam move at least member that regional butt and shutter tighten usefulness not with the scope of moving regional butt at least of the cam surface of above-mentioned the 2nd cam; And

In the 2nd scope, drive said gear, the driving and the shutter that carry out principal reflection mirror tighten, wherein, the 2nd scope be the principal reflection mirror cam surface that drives the member of usefulness and above-mentioned the 1st cam move the scope of moving regional butt at least that regional butt and shutter tighten the cam surface of the member of usefulness and above-mentioned the 2nd cam at least.